<html>
  <head>
    <title>富文本</title>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
    <link rel="stylesheet" href="./download/font/iconfont.css" />
    <style>
      .commandZone {
        margin: 20px;
        margin-bottom: 0px;
        background: burlywood;
      }
      .editor {
        border: 1px solid gray;
        margin: 0px 20px 20px 20px;
        height: 300px;
      }
      .btn {
        margin: 10px 20px;
        color: black;
        font-size: 20px;
        line-height: 20px;
        display: inline;
      }
    </style>
  </head>
  <script src="./js/jquery.min.js"></script>
  <body>
    <div class="editor" contenteditable="true">
      86655
      <sup>2</sup>
      788788
      <sub>x</sub>
      <span class="iconfont icon-16gl-9">&nbsp;</span>
    </div>
  </body>
  <script>
    $(function () {})
  </script>
</html>
